Monacor SP-252E
Best box: 85.5 L bass reflex tuned to 32.9 Hz · F3 32.5 Hz
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Comparable 10.0" Drivers
Drivers with similar piston area, resonance and Qts — useful alternatives when the Monacor SP-252E does not fit your target box volume or tuning. Each entry links to its full enclosure design and Thiele/Small parameters.
Recommended Bass Reflex (Vented)
PORT BUILDABLE| Net Box Volume (Vb) | 85.5 Liters |
| Tuning Frequency (Fb) | 32.9 Hz |
| F3 (-3 dB Cutoff) | 32.5 Hz |
| F6 / F10 Extension | 28.0 Hz / 24.7 Hz |
| Port Inner Diameter | Ø 5.0 cm |
| Port Physical Length | 2.8 cm |
| First Pipe Resonance | 6177.0 Hz |
| Estimated MOL @ F3 | 106.0 dB SPL |
Recommended Sealed (Acoustic Suspension)
MAX TRANSIENT DAMPING| Net Box Volume (Vb) | 57.0 Liters |
| System Q (Qtc) | 0.707 (Butterworth) |
| System Resonance (Fc) | 57.2 Hz |
| F3 (-3 dB Cutoff) | 58.7 Hz |
| F6 / F10 Extension | 44.3 Hz / 33.5 Hz |
| Air Spring Linearity | High (Zero port compression) |
Thiele/Small Parameters
| Resonance (Fs) | 42.0 Hz |
| Total Q (Qts) | 0.5 |
| Electrical Q (Qes) | 0.595 |
| Mechanical Q (Qms) | 3.13 |
| Equivalent Volume (Vas) | 57.0 Liters |
| Diaphragm Area (Sd) | 353.0 cm² |
| DC Resistance (Re) | 3.75 Ω |
| Efficiency Bandwidth Product (EBP) | 70.6 |
| Linear Excursion (Xmax) | 4.0 mm |
| Thermal Power (Pe) | 75.0 W |
| Nominal Diameter | 10.0" |
| Catalog Source | Load Forge catalog (manufacturer datasheets and retailer listings) |
Frequently Asked Questions
What is the recommended ported (bass reflex) box volume for Monacor SP-252E?
Load Forge's calculated alignment puts Monacor SP-252E in a 85.5 liter vented enclosure tuned to 32.9 Hz, reaching an F3 cutoff of approximately 32.5 Hz.
Can Monacor SP-252E be used in a sealed box?
Yes. In a sealed (acoustic suspension) enclosure of 57.0 liters with a Qtc of 0.707 (Butterworth), the system exhibits an F3 of 58.7 Hz.
What port dimensions should be used for Monacor SP-252E to avoid port chuffing?
Sized from cone displacement (Sd × Xmax), a minimum port diameter of 5.0 cm with a length of 2.8 cm is suggested; check the port air velocity at your drive level in the Load Forge Studio.
Shareable Acoustic Card for Forums & Social Media
Embed this design card on DIYAudio, AVSForum, Reddit, or Facebook. It shows the calculated F3, MOL (when the power rating is published) and box parameters.
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